Bellows



(Modem SA.G.REBD.

BELLOWS. l

`Patented Sept. Z7., 1881.

F EAL N. PETE nnnnnn :0.a nnnnnnnnnnnnnnnnnnnn c.

i line w y, Fig. l.

" UNI-TED STATES PATENT Orifice.;A

SAMUEL G. REED, 0F NEWTON, MASSACHUSETTS.

BELLows.

SPECIFICATION forming part of Letters Patent No. 247,517, datedSeptember 27, 1881,

' Application ined February 14, 1881. (Model.)

To'all whom it may concern Be it known that I, SAMUEL G. REED, ofNewton, in the county of Middlesex and State of Massachusetts, haveinvented a new and useful Improvement in Bellows, of which the followingis a specication.

In the accompanying drawings, in which similar letters of referenceindicate like parts, Figure lis a front elevation of a bellows andoperating mechanism embodying myinvention. Fig. 2 is a vertical sectionof the same upon Fig. B'is a vertical section, taken at a right angle tothat of Fig. 2, of the bellows proper, with the valve raised so as tooperate the same. Fig. 4 is a section upon line z z, Fig. 1, showingadjacent parts, a portion being represented as broken out, the better toillustrate the invention.

a and a' are respectively the upper and'lower portions of adouble-acting bellows. b is the top; c, the bottom, provided with theopening c', and d d the central partitions or partition having theopening d. a is the outlet or communicating pipe carrying the blast ofair to the desired place. v

e is a hemispherical or spherical rubber valve secured to the under sideof the spring e', mounted upon blocks e". Aohain,f,extends from thevalve e to a similar valve, g, secured to the top of the rod h, which isprovided with a rack, h', meshing into cogs upon thel wheel k, supportedby the shaft k. It will be noticed that the cogs upon the wheel k are intwo sets, opposite each other, the rest of the periphery being plain. lis a guide-rod running in the guides l Z.

m is a horizontal rod, one end ot which is secured to the top b, (whichis usually weighted,) and. the other end to the vertical rod m,which isheld by the lever n, pivoted to the post nf, and runs in the tube m.

fu is an unwinding-barrcl, and fw a pulley for accommodating a weightfor supplying power.

The operation of my device is as follows: Power of any kind having beenapplied to the shaft 7c', the wheel 7c,which is fixed thereupon, turns,and the cogs engage the rack h', raising the rod h, (which is guided bymeans of l l l,) andconsequently the rubber valve g. The raising of therod h and valve g slackens the chain f, thus allowing the valve e to beraised from the opening d by means of the springvc, as seen in- Fig. 3.The valve g reaches the opening c', makes a tightflt therein on accountot' its shape and material, and, pushing up the bottom c, forces theairfrom the lowerinto the upper chamber, and thence into the pipe a. Asthe wheel 7c turns and the cogs pass the rack h' the plain portion ofthe wheel is reached, and the rod suddenly drops into the position shownin Fig. 2, straightening the chain and pulling the valve c down into theopening d in the partition d. The cogs on the opposite side of the wheelthen engage the rack, and the operation is repeated. When the rod hrises, as above described, and about asits valve g reaches the bottom c,the project-ion n lifts the lever n, and hence the rods m and m,whichassist in raising the top b, (which is usually weighted,) thus obviatingthe necessity of the air doing all the work. When the rod h drops andthe valve c closes, theweight of the top b presses out the air in theupper chamber into the pipe a. Thus the bellows is rendereddouble-acting.

Of course two, three, or more bellows may be applied to the shaft lc',and their wheels k so arranged that one or more will always be sendingair into the common pipe, thus securing a steady flow..

In order that a steady friction or labor may be applied to theactuating-wheel, so that it may notjump when the cogs have passed therack and the plain portion appears, I propose to apply a cum which willcompensate for the absence of cogs ou certain portions of the wheel. pshows a wheel intended to run a bellows, and s a cam, `both fixed to theshaft k. A weight, t, pivoted to the post t', lies upon the cam, whichis so placed as to present its projecting portion where there is thegreatest radius, and consequently the most friction, at the time whenthe plain or blank portion oi' the wheel is presented to the rack, thusproducing the desired effect-viz., the equalization of the motion of thewheelp.

The valves may be spherical or semi-spherical in shape, and areconstructed of rubber or other similar elastic or iiexible substance orcompound.

IOO

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

l. The combination, with the bellows a a', provided with openings c d inthe bottom 0 and partition d thereof, of the elastic spherical orsemi-spherical valves c g, connected by a chain or cord,f, the springe', and the rod h, arranged to operate substantially as and for thepurposes set forth.

2. In combination with the bellows a a', valves and chain e gf, and rodh, provided with rack h, and lifting-pin n, the lever n, and rods m m,the latter secured to the bellows top b, constructed and arrangedsubstantially as and for the purpose described.

3. In combination with the rack h', secured to thelifting-rod h, and anactuating-wheel, p, havshaft k', substantially as and for the purpose 3oset forth.

SAMUEL G. REED.

Witnesses HENRY W. WILLIAMS, JOHN E. FRENNING.

